Detector Tube Measurement Range 0.25 to 140 ppm Gas Detected Methyl Mercaptan For Use With Mfr No 70551 Mfr No GV-100-SOHA-TR Mfr No GV-110-S-TR Mfr No GV-110-SOHA-TR Color Change White to Yellow Operating Pressure Ambient Operating Temperature - Minimum 32 Degrees F Tube Material Glass Break-Off Tip Yes Calibrated Yes Product Type Gas Detection Tube Sampling Method With Pump Shelf Life 3 yr Application Industrial Safety and Health Sampling Time 1.5 min (2.5 to 70 ppm)